Remote Agent and Unsatisfied Plugin Dependency

Hello,We installed and configured Bamboo Remote Agent to run a build on a remote server. Communication between the remote agent and the Bamboo server seem to be established successfully. Bamboo server has one custom plugin which we downloaded from Atlassian Marketplace - called Project Variables.When we run a simple test plan with the Remote Agent, which does not even include Project Variable usage, we get this error message (pasted below).This is part of our Production build.Please advise as to how to resolve this?